From Greek: para allelois beside one another. Lines are parallel if they lie in the same plane, and are the same distance apart over their entire length. Try this Drag any orange dot at the points P or Q. As the line PQ moves, the line RS will remain parallel to it. Parallel lines remain the same distance apart over their entire length.
It is important to know whether the cancer has got into the lymph glands because they are one of the main mechanisms by which the cancer can spread to other parts of the body. As long as the spread is just to the lymph glands near to the colon then this would indicate Stage 3 cancer.
Nodes. Lymph nodes, like the ones your doctor feels during your physical exams, are important for two reasons: They filter the lymph that passes through the vessels and add lymphocytes to it. Lymphocytes are a type of white blood cell.There are two types, small lymphocytes and large lymphocytes, and they defend the host from disease and infection. Lymph nodes are little meters for doctors.odes. Lymph nodes, like the ones your doctor feels during your physical exams, are important for two reasons: They filter the lymph that passes through the vessels and add lymphocytes to it. Lymphocytes are a type of white blood cell.